What do you do when you need more memory but all
of your server’s system memory slots are full and a new
server isn’t in your budget? You can increase your
available memory with high-speed Samsung Load-Reduced Dual Inline
Memory Modules, or LRDIMMs, using Inphi’s Isolation
Memory Buffer (iMB™) technology. iMB-enabled Samsung
LRDIMMs can provide twice the memory in a given amount of space by
allowing you to fill all memory slots with quad-ranked DIMMs.

In our labs, Principled Technologies benchmarked
an IBM® System x3750 M4, a server based on the
Intel® Xeon® processor E5-4600 product family,
targeted at end-user applications such as ecommerce servers as well
as high-performance compute systems that could benefit from the
additional cores and system memory available in a four-socket
system compared to traditional two-socket systems. We set up the
System x3750 M4 with 384 gigabytes (GB) of standard system memory,
or RDIMMs, to determine how much overall application performance it
delivered and how adding virtual machines (VMs) affected
performance with standard RDIMMs.

Then we replaced the standard system memory
DIMMs with the iMB-enabled Samsung LRDIMMs that use Samsung memory
and Inphi’s iMB component, giving us 768 gigabytes (GB)
of system memory using the same number of memory slots.

We measured the application performance of the
two configurations using a tool that simulates a real-world
ecommerce workload. With the LRDIMMs, the server could support
twice as much memory and deliver more than twice as many orders per
minute (OPM) at 10 VMs. As we added more VMs, performance
increased, rather than decreased as it did with the RDIMM
configuration, because each VM had a large amount of system memory
driving performance. At 12 VMs, the iMB-enabled Samsung LRDIMM
configuration delivered 148.1 percent greater performance than the
RDIMM configuration provided at 10 VMs. This boost means more
capacity and room for your business to grow.■